One of our favorites is the story of Margaret Mead and her studies pertaining to various cultures in an attempt to better understand other people that she might better understand her own society. It's a noble goal and she worked toward it admirably. She found that in societies where children learned to help work and care for themselves and younger siblings they easily grew into happy adults. Adulthood came naturally. In those societies where children did not learn responsibility and were not taught the value of work they grew into angry, resentful adults.
I know it is sometimes easier to clean house ourselves than teach a five year old to do it and then have to live with the somewhat messy results. But take a deep breath and remember that even though the floor isn't mopped perfectly you are making a significant contribution to a greater end than clean floors. You are building a lifetime of happiness and joy in your house and your child.